Ladder device for ascending gas containers



July 5, 1932. F. EINBECK 1,865,684

LADDER DEVICE FOR SCENDING. GAS

Filed DBC. 20. 1928 ngz. @-T

` neck /nventan' Patented july 5, 1932 UNITED YSTATES PATENT OFFICEFRIEDRICH EINBECK, OF DORTMUND, GERMANY, ASSIGNOR TO THE FIRM AUG.KLNNE,

OF DORTMUND, GERMANY LADDER DEVICE FOR ASCENDING- GAS CONTAINERSApplication led December 20, 1928, Serial No. 327,440, and in GermanyJanuary 5, 1928.

The subject of the present invention forms a mechanism for descendinginto, and ascending from, gas containers, particularly waterless gascontainers, in which the closeness of the disc against the containerwall must be inspected from time to time,y in order to discover anyleakages. The air space above the disc inside the container musttherefore be accessible at all times and at all positions of the disc.For the present purpose in accordance with the scope of the invention anarticulated ladder is arranged, which at its lower end is secured to thedisc, passes overa guide wheel on the cover and is held taut by means ofcounterweights, which must equal not only the weight of the articulatedladderl alone, but also the maximum admissible loads of the articulatedladder. Preferably this articulated ladder is made in duplicate, the twoparts being arranged opposite to each other, the two articulated laddersbeing supported by means of reciprocal elements engaging one within theother, so that a ladder shaft is formed, which is made up of the twooppositely lying articulated ladders and the side lelements belongingthereto.

The invention is shown on the accompanying drawing.

Fig. 1 shows the complete arrangement with two articulated ladders;

Figs. 2 and 3 show a part of the ladders on a larger scale;

Fig. 4 is a fragmentary section on a larger scale of a rotary connectionat the lower ends of the ladders; and

Figs. 5 and 6 are a side elevation and a top plan view of Fig. 4 withsome parts removed.

The mechanism consists of an articulated ladder a, shown in sideelevation in Figs. l and 2, and in front elevation in Fig. 3. Thisarticulated ladder is fastened at its ower end to the movable disc b bymeans of a foot fastening k. The articulated ladder a is passed over aguide wheel d, which is secured Vto the cover c of the container. Thecover c carries an' entrance turret T, through which the articulatedladder a can be conveniently climbed. The articulated ladder w is heldtaut by a counterweight e. Preferably the 50 articulated ladder a ismade in duplicate. In

this case the articulated ladders have lateral hooks f, which engagewith each other from above alternately from left to right, so that theload of the ascending or descending persons is always transmittedequally to both counterweights. At the same time the distance one fromthe other of the individual articulated ladders is determined by thesehooks f and a reciprocal stiffening is achieved, so that the mounting ofthe articulated ladders is simplified. The distance of the individualchain ladders from each other and the length of the ladder rungs gcorrespond to the usual measurements, so that comfortable mounting ispossible. Through the reciprocal arrangement of two articulated laddersand the lateral hooks f a ladder shaft is formed, which possesses rungsfor ascending and descending on two oppositely lying sides, and in whichhooks f arranged on the other two sides give protection against falling.The foot fastening L is rotatably secured to the disc 5. Thisarrangement is best shown in Figs.

4 to 6 wherein the foot-fastening L is movably connected with the disc bthrough the intermediary of hinge elements Z and swivelk.

I claim Y Ladder device for ascending gas containers with an ascendingand descending disc, compri-sing two ladders with lateral inter-engagingelements, a member connecting said ladders lat one end, a universaljoint connecting said member to the movable disc adapted to articulateeach of the two ladders, guide rollers secured to the cover o-f thecontainer over which rollers the other ends of the link ladders pass,and counter-weights each connected to the free end of each ladder andholding taut the link ladders.

In testimony whereof I have affixed my 90 signature.

FRIEDRICH EINBEOK.

